Exclusively for its Prime members, Amazon takes $15 off your first Amazon Prime Now order via coupon code "15OFFNOW". Plus, if you use the code, you'll receive an e-mail from Amazon on December 2 with a second coupon code, bagging you $5 off your second Amazon Prime Now order. Although Prime Now offers just a small subset of Amazon's overall product selection, that's the best combined discount we've seen on this service. (We've seen up to a combined $20 off before, but those required a purchase of a certain amount.)

Amazon Prime Now offers free 2-hour shipping in select cities on thousands of items; 1-hour shipping is also available for $7.99. Click here to see if the service is available in your area. Some exclusions apply. The first coupon expires November 28; the second will expire December 31.